Look on the bright side. If the US adopted the European Union rules the time would be limited to 3 months. Extensions to the 3 month rule can be granted by each individual country but only after applying for a Visa which cost around $200.
http://travel.state.gov/content/passports/english/go/schengen-fact-sheet.html
Did you ever try to travel to Mexico by car? If you go past the border region you need to temporarily import your car. You pay for this (around $44) you need to post a bond ($400) and you are limited to a 6 month stay. However to stay 6 months you also need to apply for an FMT (tourist permit) for $22. Oh and Mexico will not recognize your auto insurance, so you must buy that too. from a Mexican insurance company.
http://www.mexpro.com/mexico/vehicle-import-permit.html
